During Initial Rounds,the Nurse Notes That a Dobutamine Infusion Has

question 4

Multiple Choice

During initial rounds,the nurse notes that a dobutamine infusion has extravasated into the forearm of a patient.After stopping the infusion,the nurse follows standing orders and immediately injects phentolamine (Regitine) subcutaneously in a circular fashion around the extravasation site.What is the mechanism of action of the phentolamine in this situation?

• A) It neutralizes the extravasated dobutamine immediately.
• B) It causes arterial vasoconstriction and reduced pain and swelling at the site.
• C) It increases peripheral vascular resistance and reduces arterial pressure at the site.
• D) It increases blood flow to the ischemic site by vasodilation to prevent tissue damage.

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